Do you need to draw a 3D circular stair on AutoCAD?
From the creators of 3D Spiral Stair and 3D Helical Ramp, AFV Software, comes 3D Helical Stair, a powerful and very easy to use add-on for AutoCAD 2000 / ADT thru AutoCAD 2007.
This dialog box driven, Fast Load AutoLISP (FAS) application, lets you build a complete 3D helical stair in seconds, including fancy handrails and tread finishes.
Just specify on the dialog box: Tread depth, Landing height, Inner radius, Stair width and Max. riser height. You'll watch the stair being built in seconds performing the following tasks:

Riser and tread finishes including nosing…

Left and/or right top railing, intermediate railing and balusters. All elements are automatically drawn on their own layers…
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The dialog box allows the user to see all calculation results before executing the OK button. Number of risers, final riser height, 2 risers + 1 tread value, XY plane landing angle, total length, height/revolution, and tread angle can be checked, after you have entered the data, thru a helpful “Do Calc” button. The chosen parameters give you the possibility to draw hundreds of different stair models.

You can also get the volume of the stair by means of the “Massprop” AutoCAD command. Should you need a cross section, just join together all elements with the AutoCAD “Union” command, and then use the “Slice” command.
3D Helical Stair is available for metric and imperial units. A graphical tutorial is ready for download. With your purchase you’ll receive an interactive panorama of a stair sample.
Back to TopFeatures
- Helpful dialog box
- 5 design parameters
- Each stair element has its unique layer
- Metric (m, cm and mm) and Imperial units
- Final model suitable for rendering
- Imperial and Metric graphical tutorials
- AutoCAD 2000 thru 2007 and ADT compatible
- Supports non-English versions of AutoCAD

Compatibility
- AutoCAD 2011
- AutoCAD 2012